{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Anatomy"], "input": "Urine samples were also analyzed for As metabolites by atomic fluorescence spectrometry ( AFS ) and for the sum of As metabolites by atomic absorption spectrometry ( AAS ) , as reported by Lindberg et al ."}
{"Anatomy": ["Urine samples"]}